Divestitures - Additional Information (Detail) (DeltaNu, USD $)	3 Months Ended
Mar. 30, 2013
Divestitures [Line Items]
Proceeds from sale of assets	$ 500,000
Percentage of Earn-out receivable	5.00%
Earn-out period	5 years
Maximum earn-out payments during payment period	1,000,000
Maximum
Divestitures [Line Items]
Maximum consideration receivable from assets sold	1,500,000
Minimum
Divestitures [Line Items]
Annual minimum earn-out payment receivable	$ 100,000

The cash inflow from the sale of other tangible or intangible assets used to produce goods or deliver services not otherwise defined in the taxonomy.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfOtherProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration